The BEB cross section in principle includes neutral dissociation and ionization,
and hence should be higher then experimental ionization cross section, if
high-quality molecular wave functions are used. For CF4, the BEB
cross sections from correlated wave functions (denoted as CAS [complete active
space] wave functions) are larger than the experimental cross section measured
by Nishimura and included in Ref. [6]. The MO constants cited below will
lead to the total ionization cross section marked BEB from a RHF [restricted
Hartree-Fock] wave function.